Process of manufacturing paper or pulp



Patented Jan.30,1923. i 1,443,454

LEVIS MILLER BOOTH, OI! PLAINFIELD, NEW JERSEY.

PROCESS OF MAN FACTURING PAPER OR PULP.

No Drawing. Application filed April 13, 1921. Serial No. 461,049.

To wllwhomitmay mm: In practicing my invention 1 have suc- Be it knownthat l, Lnvrs Mmn'nR BoorH, cessfully used a mixture of sulphate of acitizen of the United States, residing at aluminum and sodium carbonatein the ratio 975 Cedar Brook Road, Plainfield, in the of substantiallytwo (2) toone (1), applied 5 county of Union and State of New. Jersey,as a powder to the white water entering the have invented certain newand useful Imreclaimer. However, I do not desire to limit provements inProcesses of Manufacturing myself to these two reagents, but can use anyPaper or Pulp. two reagents which will cause a coagulation Thisinvention relates to the process of of the finely divided solids of thewhite 10 manufacturing paper or pulp on a Fourwater and which will aidthesediment-ation drinier or other paper machine where the of saidsolids which are then in greater constock 1s suspended in water and isapplied centration, conveniently available for re-use.

to a screen. By the processes heretofore 1n Having described myinvention, 1 claim:

use, a substantial portion of the fibre and 1. The process ofmanufacturing paper or 15 loading material, together with nearly all ofpulp, consisting of reclaiming for reuse the the water passes throughthis screen and is solid particles in the white water by the adeitherwasted or goes through a save-all or dition thereto of such reagents aswill assist reclaimer wherein a portion of the fibre and by coagulationin the sedimentation of said loading material is recovered and retainedsolid particles.

20 for re-use. The material which passes 2. The process of manufacturingpaper or through the screen of the machine, consistpulp, consisting ofreclaiming for reuse the ing of fibre, loading material and water, issolid particles in the white water by the adtechnically known as whitewater. The dition thereto, in dry form separately, of

solid particles 1n the white water which pass such reagents as willassist by coagulation 25 through the screen on the machine, are very inthe. sedimentation of said solid particles.

30 b practices heretofore known.

minute and therefore settle slowly, with a .3. The process ofmanufacturing paper or result that a considerable portion of them pulp,consisting of reclaiming for reuse the pass out. with the liquid portionand are solidparticles in the white water by the adwasted where paper orpulp is manufactured dition thereto, indry form, a mixture of such 1reagents as will assist by coagulation in the The object of my inventionis to reclaim sedimentation of said solid particles. the fibre andloading material from white 4. The process of manufacturing paper orwater which was heretofore lost. The white pulp, consisting ofreclaiming for reuse the water heretofore has been passed solely solidparticles in the white water by the ad- 35 through a recla'imer whereinit was intended dition thereto, in soluble form separately, of

that the solid portion of the white matter such reagents as will assistby coagulation should settle by natural sedimentation, or in thesedimentation of said solid particles. through a screening save-all.Many of the 5. The process of manufacturing paper or solid particles,however, settled so slowly, pulp, consisting of reclaiming for reuse the40 i and were so minute, that they were carried solid particles in thewhite water by the adaway by the water and lost. My invention ditionthereto, a liquid mixture of such reconsists in adding chemical reagentsto the agents as will assist by coagulation in the white water, fedeither separately or tosedimentation of said solid particles.

gether, in either solid or liquid form, the v 6. The process ofmanufacturing paper or .45 ratio of such chemicals, the one to the otherpulp, consisting of. reclaiming for reuse the being such that thetreatment will not cause solid particles in the white water by such reachange in the reaction, either acid or alkaagents as will assist bycoagulation in the line, of the white water so treated, theresedimentation of such solid particles an agents being such as willcause such a cowill not change the reaction either acid or 50 agulationof the finely divided and minute alkaline of the water so treated.particles of solid matter in the white water, Signed at Elizabeth, NewJersey, this 11th. as will aid the sedimentation of such solid day ofApril, 1921. matter and produce such concentration as will render themconveniently available for LEVIS MILLER BOOTH.

5 5 re-use.

